Pergunta de entrevista da empresa Rackspace Technology
An application has just been updated. New functionality, for some reason is performing far more slowly than existing functionality. Why might this be?
Resposta da entrevista
Sigiloso
22 de dez. de 2011
The answer they were looking for was that new SQL queries were not using indexed keys. I came up with the answer eventually, but only after some generous promping.